Smoke-consuming furnace.



0. D. ORVIS.

SMOKE CONSUMING FURNACE.

APPLICATION FILED SEPT- 16. 1913.

1,170,989. v Patented Feb; 8, 1916.

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SMOKE CONSUMING FURNACE.

' APPLICATION FILED SEPT-16, I913.

' Patented Feb. 8, 1916."

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ORLAND n. ORVIS, or new YORK, N. Y,

AssIGnoR, BY MESNE ASSIGNMENTS, T0

UNITED FURNACE CORPORATION, OF 'NEW YORK, N. Y., A CORPORATION OF DELAWARE.

To all whom it may concern: Be it known that I, ORLAND D. ORvIs, a citizen of the United States, residing atthe city of New York, borough of Manhattan, county and State of New York, have invented a certain new and useful Smoke- Consuming Furnace, of which. the follow- This invention is a furnace wherein steam and air are introduced into the fire chamber for the purpose of burning the smoke and gases, as a result of which increased heat is generated and the objectionable smoke is eliminated. One of the problems in'a furnace of this character is the distribution of the steam and air in a manner'to thoroughly commingle withthe smoke and gases, but'in my construction this distribution is effected in a thoroughly satisfactory manner and by one or more nozzles, the inflowing steam and. air spreading on diverging lines from'said nozzles, so as to substantially cover' .the

whole area of the grate, and in proximity to the bed of fuel.

A salient feature of the invention resides in one or more nozzles, although it is preferred to employ a single nozzle, the aggre-' on diverging lines, and in proximity to the 7 bed of fuel, so that the steamand air delivered by the nozzle will cover an area within the grate chamber substantially equal to the area of the grate. This results in diffusion of the steam and'air uniformly into and through the smoke and gases arising from the burning fuel on the grate, and secures such a thorough combustion of the smoke and gases that no perceptibly colored the stack, thereby and securing the further advantage of generating increased heat unlts for the reason andthe gases are burned by the laddition of air thereto.

. In apreferred form, the nozzle is provided with a curved wall, and in this wall' SMOKE-CONSUMING FURNACE.

Specification of Letters Patent. 1 Patented Feb, 8, 1916, Application filed September 16, 1913. Serial No. 790,141. 1

are three slots, two of which are in the same plane and, discharge the steam and air. at

tional area of the pipe or fitting to which said nozzle is aflixeda The slots and aper tures of the nozzle distribute the steam and air indifferent planes, and so that the,

streams be directed incrossing lines, the path of flow being close'to the bed of fuel, as a result of which the smoke and gases are broken up and'the steamand air intimately mixed therewith, whereby the smoke and gases are effectively burned.

The nozzle is positioned, preferably, in the front wall of the furnace chamber, substantially centrally thereof. By using a single nozzle operating to diffuse the steam and air as described, superior results are obtained and the device can be installed easily and economically; in fact, the device is capable of usein all kindsof boiler furnaces, and in furnaces the construction of which is'such as to renderit difficult, if not prohibitory, to install air and steam feedin appliances of other constructions.

The invention embodies, also, a construction of bridge wall provided with a plu- 'rality of arches and rising above the bridge wall so. as to substantially embrace the boiler. 1 The flues in thebridge wall tend,

in a measure, to retard the outflow of the smoke and gases and to result in a circulation thereof upwardly within the fire chamber and aroundthe boiler, thus securing increased contact' of the heat with the boiler,

but by injecting'the steam and air from the p nozzle towardthe arches in the bridge wall,

no objectionable" impedance ingthe draft through the fire chamber and the flue will follow from the arches retarding the out flow. of the gases f V Another feature of the invention is a water circulating pipe positioned within the fire chamber soas' to be exposed to the heat thereof for the purpose of securing chamber, thus exposing the water to the direct action of the heat resulting in a quicker heating of thewater and a more rapid cir- .a circulation of water directly through said 'rearwardly extending flue or combustion culation thereof. It is preferred to employ within the chamber a water pipe thediameter of which exceeds that of the circulating pipes which are connected to the front and rear of the boiler, said water pipe being of greater capacity than the circulating pipes and united thereto by reducing couplings.

Other features of the invention, and'the advantages thereof, will appear from the following detailed description.

In the drawings, Figure 1 is a vertical section, partly in elevation, of a furnace equipped with means for feeding steam and air thereto constructed in accordance with this invention. Fig. 2 is a vertical cross section on the line 2-2 of Fig. 1 looking in the direction of the arrow. Fig. 2 is a vertical section, partly in elevation, illustrating the means for supplying steam and air to the discharging nozzle. Fig. 3 is a horizontal section, partly in plan, on the line 33 of Fig. 1. Figs. 4, 5 and 6 are enlarged detail views of a preferred form of distributing nozzle; Fig. 4: being a horizontal section on the line 4lof Fig. 6; Fig. 5 being a front elevation of the nozzle, and Fig. 6 being a longitudinal section on the line 66 of Fig. 5. g

A indicates a boiler, B a fire chamber containing a grate b, C is a bridge wall, all of which are usual in the art. Fuel is supplied to the grate through charging doors Z) separated by an intermediate wall 6 and air is supplied beneath the grate through the ashpit door opening 5 According to this invention the bridge wall C is extended upwardly at C so as to substantially embrace the boiler, as shown in Figs. 1 and 2, and in this upwardly extending part of the bridge wall are provided openings 0, arched as at c, and separated by columns 0 The arched openings 0 provide for the outflow of gases and other products of combustion from the fire chamber B into the chamber B, and these openings used in connection with the upwardly extending part C of the bridge wall secure the upward circulation of some of the smoke and gases upwardly within the fire chamber and into contact with the boiler, thus securing increased steaming capacity.

The steam and air are supplied to the combustion chamber by one or more nozzles D,

a preferred form of said nozzle being shown in Figs. 4, 5 and 6. Said nozzle is shown as having a threaded opening 03 into which is screwed a pipe E, for the purpose of feeding steam and air to the chamber d of the nozzle. A salient feature of the nozzle is a curved wall 6 in which is provided a series of slots f g h and openings 2' a" 2' The slots f g are in the same horizontal plane and open through the nozzle at the respective sides of the vertical central line thereof, so as to discharge the steam and air on diverging lines into the fire chamber B. The other slot h in a plane below that of the slots f g, and this slot it exceeds the length ofeither slot f 9, said slot k opening through the middle part of the curved wall 6 so as to discharge the steam and air centrally into the fire chamber, the air flowing out of the slot 71 intersecting with the streams of steam and air flowing out of the slots 7 g. The aperture 2' is positioned intermediate the slots f 9, whereas the other apertures 2' z" are at the re spective ends of slot h, said apertures 71 z" and slot it being in the same transverse plane.

The aggregate area of the slots 7 g h and apertures i z" i is equal substantially to the cross sectional area of pipe E, thus insuring the free outflow of steam and air through the various exits of the distributing nozzle and avoiding any substantial impedance of the outflowing air by frictional contact with the walls of the slots and apertures.

Nozzle D and feed pipe E are embedded within the wall 6 which separates he charging openings Z), the curved wall. 6 of the nozzle opening through the rear face of wall 5 so that the steam and air will be discharged into the fire chamber from a centra'lly positioned nozzle. The pipe E extends through the front face of wall 62, and

to this end of the pipe is attached a fitting F, the latter operating to couple together an air inlet pipe G and a steam'pipe H. Said steam pipe is connected with the boiler above the water level therein for the purpose of taking steam from the boiler and delivering the same under pressure to a jet nozzle it the latter being positioned within fittin F i and facing toward the pipe E, whereby the steam flowing under pressure from nozzle induces the free inflow of air through pipe G into said pipe E, through which pipe E the steam and air flows to nozzle D, by which the steam and air is distributed in '5. comparatively thin sheet within fire chamber B, substantially over the entire area of the grate b therein, and in close proximity to the bed of fuel.

The fitting F isshown as having a remov able plug 7 positioned so that an operator can obtain easy access to the steam nozzle /i. The air tube G is open at the lower end across which opening 1s positioned a solresponding area of the corresponding pipes KL so that the heating plpe I'w1ll be of greater capacity than the circulating pipes,

thus providing for the rapid heating of water within pipe I by the direct action of the heat and gases within chamberB; Pipe K extends rearwardly from heating pipe I, and is adapted to be connected tothe rear part of the boiler, whereas the other pipe L extends from the front part ofpipe I and is connected with the front part of the boiler, as shown in Fig. 1.

The operation is apparent from the foregoing description taken in connection with the drawings. Then the furnace is in use, steam is supplied by pipe H to fitting F, and is blown into pipe E, thus inducing the i11 flow of air through pipe G, fitting F, and pipe E into nozzle D.

The slots and apertures in the curved wall of the nozzle distribute the air in a thin sheet within the fire chamber, substantially throughout the area of the grate therein,

and in close proximity to the bed of fuel, whereby the steam and air tends to break up the smoke and gases and they become intimately mixed with the smoke and gases so as to consume the carbon inthe smoke and burn the gases, as a result of which increased heat is generated and the gas issues in an almost imperceptible vapor from the smoke stack of the furnace. The arched openings in the extended part of the bridge wall operate in a measure to increase the free outflow of gases so that there will be a circulation of heat and gases downwardly within the chamber B in front of the extended part C of the bridge wall, thus bringing the heat into more intimate contact with boiler A, but as steam and air is 'durablein construction, easily installed in ordinary furnaces, and they are susceptible of manufacture and installation economically.

nozzle are positioned with a view to securing an important function in the action of the steam and air upon the smoke and gases, to wit: a breaking up of the smoke and gases and a thorough admixture of the steam and air therewith. It will be noted that the slots 7 g and aperture 2' direct The slots and openings in the distributing I streamsof steam and air-in a difier'ent plane, whereas slot in and apertures a" direct streams of steamand air in a different plane, but the streams in the different planes from the slots and apertures are delivered on lines which cross or intersect in: both horizontal and vertical planes (see Figs. 1 and 3), and, furthermore, the streams of steam and air from the circular holes 2' i 2' are-of adiffer ent form from the narrow sheets issuing from slots f g h, as a result of which the steam and air is blown'into the smoke and gases on such lines as to break up the cloud of smoke and secure anintimatemixture of the steam and air with the same, thus burning the smoke and "gases by a secondary combustion. I

The water pipe I is inclined within the grate chamber with a view to facilitating the flow or circulation of water through said pipe. Accordingly, this pipe is not only of greater capacity than the circulating pipes, but it is positioned so that the water fiows rapidly through it.

. Having thus fully described the invention,

what I claim as new, and desire to secure by Letters Patent, is

1. In a furnace, the combination with a fire chamber,. of a. nozzle, and means for supplyingsteam and air to the nozzle, said nozzle being provided with a plurality of outlets, certain of said outlets being in the form of, slots positioned for feeding sheets of steam and air in different planes and in different directions and otherof said outlets being in the form of apertures for feeding steam and air on lines which cross with the sheets supplied through said slots.

2. In a furnace, the combination with a fire chamber, of a nozzle provided with a plurality of outlets, certain of said outlets being in'the form of. slots which operate to diffuse the steam and air in different hori- 1 "zontal planes and in thin sheets, and other outlets being in the form of openings the cross sectional shape of which differs from the first named slots so as to spread the steam and air on lines which intersect with the sheets supplied through the slots, whereby thin sheets of steam and air and streams of steam and air are blown in different planes directly into the smoke and gasesfor effecting disintegration of the cloud of.

ing the steam and air in thin sheets and in different horizontal planes, and certain other exits being in the form of apertures operat ing to direct streams of steam and air in directions which cross the sheets of steam and air supplied through the slots.

4. In a furnace, the combination With a fire chamber, and a pipe for supplying steam and air, of a distributing nozzle provided with a series of slots and with apertures the aggregate area of Which is equal substantially to the cross sectional area of said pipe, said slots being in different horizontal planes for directing sheets of steam and air directly into the smoke and gases and said apertures being of a different cross sectional. form from the slots, said apertures being positioned relatively to the slots for directing streams of steam and air on" lines Which cross With the sheets supplied through the slots.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses; 7

ORLAND D. ORVIS.

Witnesses:

H. T. BERNHARD, M. O. RODRIGUEZ.

Copies of this patent may be obtained for five cents each, Hy addressing the Commissioner of Patents, 7 Washington,D. G'. 

